An Introduction to the Study of Zoology, Illustrated by the CrayfishAppleton, 1906 - 371 pagini |
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Pagina 6
... external maxillipede ; 10 , forceps ; 14 , last ambulatory leg ; 17 , third abdominal ap- pendage ; 20 , lateral lobe of the tail - fin , or sixth abdominal appendage ; XV , the first ; and xx , the last abdominal somite . In this and ...
... external maxillipede ; 10 , forceps ; 14 , last ambulatory leg ; 17 , third abdominal ap- pendage ; 20 , lateral lobe of the tail - fin , or sixth abdominal appendage ; XV , the first ; and xx , the last abdominal somite . In this and ...
Pagina 17
... external skeleton . It is from the circumstance that the body of the crayfishes is enveloped in this hard crust , that the name of Crustacea is applied to them , along with the crabs , shrimps , and other such animals . Insects ...
... external skeleton . It is from the circumstance that the body of the crayfishes is enveloped in this hard crust , that the name of Crustacea is applied to them , along with the crabs , shrimps , and other such animals . Insects ...
Pagina 21
... external maxillipede ; 10 , forceps ; 11 , first leg ; 14 , fourth leg ; 15 , 16 , 19 , 20 , first , second , fifth , and sixth abdominal appendages ; X. , XI . , XIV . , sterna of the fourth , fifth , and eighth thoracic somite ; XVI ...
... external maxillipede ; 10 , forceps ; 11 , first leg ; 14 , fourth leg ; 15 , 16 , 19 , 20 , first , second , fifth , and sixth abdominal appendages ; X. , XI . , XIV . , sterna of the fourth , fifth , and eighth thoracic somite ; XVI ...
Pagina 23
... external maxillipedes . If the head of a stout pin is pushed between these external maxillipedes , it will be found that it passes without any difficulty into the interior of the body , through the mouth . In fact , the mouth is ...
... external maxillipedes . If the head of a stout pin is pushed between these external maxillipedes , it will be found that it passes without any difficulty into the interior of the body , through the mouth . In fact , the mouth is ...
Pagina 49
... These grasp the food , and , tearing it into pieces of the proper dimensions , thrust them between the external maxillipedes , which are , at the same time , worked rapidly to and fro sideways , so as to THE PROCESS OF FEEDING . 49.
... These grasp the food , and , tearing it into pieces of the proper dimensions , thrust them between the external maxillipedes , which are , at the same time , worked rapidly to and fro sideways , so as to THE PROCESS OF FEEDING . 49.
Alte ediții - Afișează-le pe toate
An Introduction to the Study of Zoology, Illustrated by the Crayfish Thomas Henry Huxley Vizualizare completă - 1895 |
An Introduction to the Study of Zoology, Illustrated by the Crayfish Thomas Henry Huxley Vizualizare completă - 1902 |
Termeni și expresii frecvente
abdomen abdominal appendages abdominal somites ambulatory limbs Amurland animals antenna antennule aperture appears artery arthrobranchiæ Astacine Astacus fluviatilis Astacus torrentium attached basal joint blastomeres blood body branchiæ branchial cavity carapace cardiac cavity cephalothorax cervical groove chelate chitinous corpuscles coxopodite cray Crustacea cuticle cuticular division ecdysis Écrevisses edge endopodite English crayfish epiblast epipodite exopodite exoskeleton eye-stalk fact female filaments fluviatilis.-A forceps front ganglia ganglion gastrolith gills give rise green gland hind-gut hinder hypoblast Illustrations inner integument lateral leptodactylus less lobster longitudinal male mid-gut middle modified morphological muscle muscular nerve fibres nobilis noble crayfish nucleated cells nuclei organs ossicle outer pairs plate pleura podobranchiæ portion posterior prawns present region ridge rostrum segments septal lines setæ side somite species spermatozoa spines sternal sternum stomach structure substance surface swimmerets telson tergal tergum terminal thoracic thoracic limbs thoracic somite tissue transverse wall yelk zone